W, and W₂ each independently is a hydrogen atom or a

group wherein Y is a n-C_1-6 alkvlene group or a n-C_1-6 alkylene group having a C_1-6 alkyl group substituent; and R, and R₂ each independently is a hydrogen atom or a C_1-5 alkyl group, and

group in

group may form a saturated heterocyclic ring selected from the group consisting of morphohno. pyrrolidino, piperidino, homopiperidino and piperazino groups. and the saturated heterocyclic ring except the morpholino group may have at least one C_1-4 alkyl group, hydroxyl group or halogen atom as a substituent;

Z, is a hydrogen atom, a chlorine atom, a bromine atom, an iodine atom, a hydroxyl group, an amino group, a C_1-3 alkyl group or a methoxy group;

Z₂ is a hydrogen atom or an amino group;

when W, and W₂ are both hydrogen atoms, Z, is a hydroxyl group or an iodine atom and Z₂ is hydrogen atom, or Z, and 2₂ are both amino groups;

When Z, and 2₂ are both hydrogen atoms, the

group in either W, or W₂ is a morpholino group;

when Z, is a chlorine atom, a hydroxyl group, an iodine atom, a methyl group or a methoxy group, Z₂ is a hydrogen atom;

when Z, is an amino group, Z₂ is a hydrogen atom or an amino group;

when Z, is a methyl group, a methoxy group or an amino group, Z, is in the 5-position; when Z, is an iodine atom, Z, is in the 5- or 7-position; and when Z, and Z₂ are both amino groups. Z, and Z₂ are in the 5- and 7-positions; and the physiologically acceptable acid addition salt thereof.